My instinctive reaction to The Royal Watcher's question is -- No.

As everyone would realise, I don't have any information about whether Dolce & Gabbana have given these spectular jewels to Lady Kitty Spencer.

Most of the jewels photographed on Lady Kitty on her wedding day have been displayed previously in the company's advertising.

Perhaps the company has made a gift of some jewel/s, but I would doubt if all the featured jewels were a gift.

But who knows?

The designers are known to be generous.

They are certainly striking, enviable jewels, although not easy for the "average" lady to wear. But, for a lady who could afford to accessorise her gowns with specific jewels, they are superb.